66472662800 has 90 divisors (see below), whose sum is σ = 168548615658. Its totient is φ = 25189585920.

The previous prime is 66472662793. The next prime is 66472662811. The reversal of 66472662800 is 826627466.

It can be written as a sum of positive squares in 3 ways, for example, as 133448704 + 66339214096 = 11552^2 + 257564^2 .

It is a super-2 number, since 2×66472662800² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 85769 + ... + 374568.

Almost surely, 2^66472662800 is an apocalyptic number.

It is an amenable number.

66472662800 is an abundant number, since it is smaller than the sum of its proper divisors (102075952858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66472662800 is a wasteful number, since it uses less digits than its factorization.

66472662800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460393 (or 460363 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 66472662800 in words is "sixty-six billion, four hundred seventy-two million, six hundred sixty-two thousand, eight hundred".